> it’s not because of the design of Borg interfaces

As the original creator of the Borglet status page, I think it's not really accurate to describe it as "designed". :-)

It was more a case of gradual semi-random evolution, with people (mostly me, at least in the old days - I've no idea how much it might have changed in the last eight years) adding things that seemed like they could help Google engineers trying to track down issues with their Borg jobs. User-friendliness for random SSRF hackers was definitely not high on the priority list.